Whakaoti mō x
x<7
Graph
Tohaina
Kua tāruatia ki te papatopenga
x-7>0 x-7<0
Kāore e taea a te tauraro x-7 te numa kore nā te mea kāore te rituatanga mā te kore e tautuhi. E rua ngā kēhi.
x>7
Whakaarohia te kēhi i ngā wā kei te tōrunga a x-7. Neke atu a -7 ki te taha matau.
x+2\leq x-7
Kāore te tōrite tuatahi e whakarerekē te aronga ina e whakarea ana mā x-7 mō x-7>0.
x-x\leq -2-7
Neke atu ngā kīanga tau e whai ana i x ki te taha mauī me ētahi atu kupu katoa ki te taha matau.
0\leq -9
Pahekotia ngā kīanga tau ōrite.
x\in \emptyset
Whakaarohia te herenga x>7 e tautuhi ana ki runga.
x<7
Tēnā, me whakaarohia te tauira ina e tōraro a x-7. Neke atu a -7 ki te taha matau.
x+2\geq x-7
E whakarerekē ana te aronga o te tōrite tuatahi hei ngā wā e whakarea ana a x-7 mō x-7<0.
x-x\geq -2-7
Neke atu ngā kīanga tau e whai ana i x ki te taha mauī me ētahi atu kupu katoa ki te taha matau.
0\geq -9
Pahekotia ngā kīanga tau ōrite.
x<7
Whakaarohia te herenga x<7 e tautuhi ana ki runga.
x<7
Ko te otinga whakamutunga ko te whakakotahi i ngā otinga kua whiwhi.
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